作为天体粒子物理学工具的磁化宇宙中的星系际电磁级联
Intergalactic electromagnetic cascades in the magnetized Universe as a tool of astroparticle physics
摘要：
本文综述了河外磁场（EGMF）存在下的星系际电磁级联物理。星系际电磁级联的各种制度被认为取决于级联世代的数量，级联电子偏转角的值，和EGMF相干长度，典型的级联$γ$ -射线平均自由程，和电子能量损失长度之间的关系。我们还审查当代的EGMF参数的限制，并探讨各种$γ$射线仪器的EGMF参数的灵敏度。
英文摘要：
We review the physics of intergalactic electromagnetic cascades in the presence of the extragalactic magnetic field (EGMF). Various regimes of intergalactic electromagnetic cascades are considered depending on the number of cascade generations, the value of the cascade electron deflection angle, and the relations between the EGMF coherence length, typical cascade $γ$-ray mean free path, and electron energy loss length. We also review contemporary constraints on the EGMF parameters and explore the sensitivity of various $γ$-ray instruments to the EGMF parameters.
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